Steam churn-power



(No Mbdel.)

T. MAYHEW.

STEAM. GHURN POWER.

No.- 252,323. Patented Jan. 17,1882.

I UNITED STATES PATENT OFFIC THEOPHILUS ll/IAYHEXV, OF POUGHKEEPSIE, NEW YORK, ASS IGNOR OF TWO-THIRDS TO ROBERT SLEE AND CHARLES P. LUOKEY, B'OTET OF sAME PLAoE. p

STEAM CHURN-POWER.

SPECIFICATION forming part of Letters Patent No. 252,323, dated January 17, 1882. i

Application filed October 19, 1881. No model.)

To all whom it may concern: I

Be itknown that I, THEoPrnLUs MAYHEW, of Poughkeepsie, in the county of Dutchess and State ot'New-Yorlr, haveinvented certain Improvements in Steam Churn-Power, of which the following is a specification.

This invention relates to apparatus for operating churns by steam-power, and particurlarly to the application thereto ot' the flash system of generating steam.

The'invention consists in combining with a .motor having a vibratory lever for operating a churn, a steam-generator and a pump operated bysaid vibratory lever and capable of variation as to its delivery, whereby the quantity of waterdelivered and the amount of steam generated may be accurately proportioned to the work to be performed.

The invention further consists in various details of construction, hereinafter fullyset forth. In the accompanying drawings, Figure 1 represents a side elevation of the improved apparatus; Fig. 2, an enlarged view of the pumpregulating mechanism. I

The objects of my invention are to economize in fuel and water for operating motors of this class, and to render the apparatus capa ble of being speedily putinto operation.

With-these ends in view, a steam-generator is employed, consisting merely of a coil of pipe arranged within a suitable fire-chamber, com-' 'municating at oneend with a supply-pump and at the other end with the steam chest of the motor, the pump being operated by the motor, and capable of regulatiomso that onlyso much water shall be delivered to the coil as is necessary to produce the required a'mountof steam for each operative stroke.

The motor is of the same general style as that for which Letters Patent were issued to me July 8, 1879, No.2l7,392, and reissued July 12, 1881, No. 9,804, in which a vibratory lever is employed for actuating the churn-dasher.

For the practical operation of the common dasher-churn the vibratory lever is essential, and hence it becomes necessary to so construct and organize the parts of the apparatus that the pump may be'operated by amotor provided with such a lever.

"if the latter be used, as said lever descends.

Referring now to the drawings, this construction and arrangementof parts will be explained.

A represents the motor, provided wit-l1 a vibratory transmittinglever, B, to which the churn-dasher O is attached, as shown in Fig. 1. The motor is actuated by steam pressure the steam being produced in the generator D and admitted and cut oft by the valve E, controlled by atrippiug devi'ce,F, as in the patcut above referred to. V

The generator consists of a cylindrical body or casing containing a fire-grate, a,beneath which is ariash-pit, and a coil, G, of pipe, into which the water is delivered, and in which it is converted into steam, the flames and pro- "ducts of combustion passing up through the middle of the coil and escaping through a stack, 11, thus acting upon a large surface and serving to convert the water rapidly into steam. The

water is delivered to the coil G through a pipe, 7

c, by a pump, H, taking its supply from a tank, I, and said pump is actuated by the vibratory lever B, either directly or through the medium of a second vibratory lever, J, connected by a link with the tirst,'this latter arrangement being merely for convenience of arrangement of the parts. I

The pump is of ordinary construction, ahd has its rod 61 carried upward through a guide or cross bar, e, to which is attached one end of a spring,f, the other end of which is attached to the rod (1 and serves to raise the same.

The height to which the rod and its piston may rise is controlled by means of a nut or collar, g, screwed upon the threaded upper portion of the rod,and serving, byits contact with the guide or cross bar e, to limit the upward movement of therod.

A jam-nut, h, may be employed to prevent the turning of the nut g,- or a collar and setscrew may be employed instead of a nut.

The upper end of the rod dis arranged in position to be struck and depressed by the vibratory lever B, or by the secondary lever J,

When ready for operation the tank is supplied with water and fire is kindledin the tirechamber of the generator. The collar or nut g is then set so that at each operative stroke of the vibratorylever the pump shall deliver the exact quantity of water required to the coil G, where it is converted into steam, which passes to and actuates the motor A.

For the purpose of drawing oft any water which may accumulatein the coil or pipes from condensation or otherwise, a cock or valve,'c is placed at the lower end of the upright section of the steam-pipe j, and a safety-valve, 7r, is applied to said pipe to prevent too great an internal pressure.

I am aware that steam-generators have hitheito been constructed in the manner described andshown, and that the flashing system has been known and 'used for many years. As above stated, however, the employment of a motor having a vibratory lever is essential to the practical and convenient operation of churns ot' the class mentioned; and this invention consists in adaptingthis system of steamgeneration and the particular class of motors mentioned one to the other.

It is obvious that instead of arranging the pump to be depressed by the lever it may be reversed; or that a positive connection may be made with the vibratory lever and the variable stroke secured by slotting the rod to permit the lost play, and providing an adjustable stop to vary the length of the slot, or in other similar ways which will readily present themselves to the practical mechanic.

It is also apparent that the motor arranged as above described may be employed for oper- 5 ating other machinery than churns, though es- 1 pecially adapted to that use.

The churn is placed upon a base or board secured to the lower part of the framing upon which the motor is mounted, as shown, and serves to steady the apparatus.

I am aware that walking-beam engines have been operated on the flash system, and that in connection with such engines a pump has beenused operated by the walking-beam. I am also awarefthat it is not new to combine with a flashing steam-generator a pump capable of adjustment as to the quantity of water delivered at each stroke. I am also aware that a pump has been provided with an adjustable threaded stem or stop to be struck and operated by somemoving partofamotor, and therefore make no claim to these features, broadly considered.

Having thus described my invention, what I claim is- 1. The herein-described apparatus for operatiug churns, &c., consisting of generator D,

THEOPHILUS MAYHEW. A

Witnesses:

A. L. DISBROW, Tnno. F. CLARK. 

